Pitman connection.



E. A. FULKERSON.

PITMAN CONNECTION.

APPLICATION FILED OCT-27.1913.

1,134,446. Patented, Apr. 6, 19.15.

WITNESSES ENVENTOR &1? e 52mm EUGENE ADDISON FULKERSON, OF ROBLIN, MANITOBA, CANADA.

PITIVIAN CONNECTION.

Specification of Letters Patent.

Patented Apr. 6, 1915.

Application filed October 27, 1913. Serial No. 797,644.

To all whom it may concern Be it known that I, EUGENE AnDisoN FULKnRsoN, of the town of Roblin, 1n the Province of Manitoba, Canada, have invented certain new and useful Improvements in Pitmen Connections, of which the following is the specification.

The invention relates to a pitman connection and the object of the invention is to provide an improved connection between the pitman and the pitman drive shaft wh ch will cause the pitman to reciprocate twlce for one rotation of the pitman shaft.

WVith the above object in view the invention consists essentially in a slotted disk secured to the pitman shaft and sliding blocks connected to the pitman and operating in the slots, the parts being arranged and constructed as hereinafter more particularly described and later pointed out in the appended claim.

Figure 1 represents a plan vlew of my invention showing it applied on the pitman of a binding machine. Fig. 2 represents an enlarged detailed side view of the pitman, the slotted disk and adjoining parts. Fig. 3 represents an enlarged detailed vertical sectional View through the sleeve secured to the pitman and a portion of the disk. Fig. 4: represents an enlarged detailed side view part in section of the disk and sliding blocks.

In the drawing like characters of reference indicate corresponding parts in each figure.

1 represents a frame of a binding machine 2 the master or ground wheel and 3 the usual pitman drive shaft which is driven in the usual way directly from the ground wheel by a suitable chain connection.

4: represents a binder knife located at the front of the binder deck 5 and slidably carried in the shoes 6.

7 represents the pitman having one end thereof pivotally connected as indicated at 8 to the inner end of the knife.

In ordinary practice the end of the drive shaft 3 is cranked and connected pivotally to the outer end of the pitman with the result that the pitman and consequently the knife is reciprocated once for each complete revolution of the shaft 3. With my invention shortly described applied the knife 4 is reciprocated twice for each complete revolution of the shaft 3.

9 represents a risk permanently secured to the forward end of the pitman shaft 3 .the split portions of the sleeve and designed when tightened up to draw the split portions of said sleeve together sufficiently to jam and hold securely the bearing pieces .15 and 16 in any set position.

In installing my invention the disk would be preferably turned to the position shown in Fig. 2 of the drawing and one of the sliding blocks would be inserted in one of the slots and passed to the point of intersection of the slots while the other would be inserted in the remaining slot at a point remote from the center thereof, the distance between the pivot pins 14: in these positions being actually the distance it is desired to have the knife, to which the pinion is connect ed, travel. l/Vith the blocks located in the position shown in the said figure the knife would be drawn to the limiting outer position at which time the adjusting bolts 19 and 20 would be tightened to secure the bearing pieces 15 and 16 firmly in the position then occupied in the sleeve The operation of the connection so installed is as follows assuming the shaft 3 rotated and the disk turning in the direction indicated by the arrow Fig. 2. The block 12 slides outwardly in the then upper portion of the slot while the block 13 passes inwardly toward the point of intersection of the slots. At the time the block 13 is at the point of intersection of the slots the block 12 is at the outer end of its slot, this occuring during the first quarter revolution of the shaft 3. The pitman and accordingly the knife is drawn over to its limiting left hand position. During the second quarter revolution of the shaft 3, the block 12 is returned in its slot to the point of intersection of the slots while the block 13 is passed outwardly in its slot to the opposite end thereof to that occupied in the previous quarter revolution. At this time the pitman has shifted the knife to its limiting outer position. thereby completing one reciprocation of the knife. 'In the remaining half 7 revolution of the shaft 3 the blocks alternate" in their positions in a manner similar to that just described and causes the pitman to again reciprocate the knife. The constr'uction accordingly aflfects two reciprocations of the knife for onecomplete revolution'of the shaft.

Although I have shown my invention applied on a binder to operate the knife it will be understood that it could be employed to. equal advantage on other machines Where a rotatingzshaft operates to reciprocate an adjoining part.

What I claim as my invention 'is The combination With a pitman and a V rotatably'mounted pitman shaft, of a disk permanently secured to the end of the shaft and centered thereon, saiddisk being supplied With a pair of intersecting dove-tailed slots, the said 'slots' intersecting at right angles and having the point of intersection 7 located "on the center point of the disk, a

beveled block slidably mounted in each slot and having a length greater than the Width of the slot, pins'extending from the blocks, cylindrical bearing places pivotally mounted on the pins, a split sleeve carried by the pitman and receiving the bearing pieces free of the pins and adjusting bolts connecting the split portions of the sleeve and holding the bearing blocks in position Within the sleeve, as and for the purposespecified. 3;

Signed at Prince Albert this 18th day of June, 1913. l

i EUGENE ADDISON FULKERSONi In the presence of. ERIC MoN'rAsUE M LLER, i V, ERNEST GREGORY.

Copies of this patent may be obtained for five cents each, by addressing the flommissioner 01 5mm, 7

Washington, I). C. 

